Tube plate packaging structure

The utility model discloses a tube plate packaging structure. The structure comprises heat exchange tubes and tube plates arranged at the two ends of the heat exchange tubes. The tube plates at the two ends of the heat exchange tubes comprise an inner tube plate and an outer tube plate. An independent seal ring group is arranged between each heat exchange tube and the inner tube plate and the outer tube plate to seal the heat exchange tubes radially. Each heat exchange tube is only connected with the seal ring group and can expand and contract freely in the seal ring group in the length direction along with the change of the temperature. Heat exchange tube limit steps are arranged at the positions of the outer tube plate. The structure is reasonable, high-temperature resistant, corrosion resistant, long in service life and capable of effectively preventing damage to the heat exchangers by the produced thermal stress during usage, preventing cracking of the heat exchange tubes due to thermal stress and increasing the equipment service life.